Title :
Accurate measurement and FDTD simulation of the efficiency-bandwidth product for dielectric loaded antennas
Author :
Ida, I. ; Sato, J. ; Sekizawa, T. ; Yoshimura, H. ; Ito, KI.
Author_Institution :
Graduate Sch. of Sci. & Technol., Chiba Univ., Japan
Abstract :
There are several criteria for antenna evaluation. The authors have studied on the efficiency-bandwidth product (EB) for small dielectric loaded antennas (DLAs). The EBs of DLAs were accurately measured and compared with calculated ones. The calculation simulated the procedure of the Wheeler (1947) cap method. Enhancement of the EB was observed even with the loading of lower permittivity. There seemed to be an optimum value for permittivity of the loading. It was also confirmed that some DLAs with a smaller electrical volume gave the better EB than the larger ones.
Keywords :
antenna testing; dielectric-loaded antennas; digital simulation; electric resistance measurement; finite difference time-domain analysis; monopole antennas; permittivity; FDTD simulation; Wheeler cap method; antenna evaluation; dielectric loaded antennas; efficiency-bandwidth product; electrical volume; input reactance; input resistance measurement; measurement; monopole antenna; permittivity; radiation resistance; Antenna measurements; Dielectric measurements; Electric resistance; Electrical resistance measurement; Finite difference methods; Fluctuations; Instruments; Loaded antennas; Time domain analysis; Time measurement;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874945
